Thank You to FarmVille Freak Detective Saqib for confirming this information!
Following are the dates by which different FarmVille Collectables can be gifted:
 January 15, 2010 |  January 15-18, 2010 |  January 18-20, 2010 |  January 20-22, 2010 |
FarmVille released a Butterfly Collection set on 01.26.10.
FarmVille Butterfly Collection
You may have heard of this collection set previously on FarmVille Freak 
The Butterfly Collection set works like the other collection sets by rewarding you for collectables that you “find” while farming.
The Butterfly Collection includes (Thank you to FarmVille Freak Erica from the Netherlands for this information!):
FarmVille has now allowed us to gift the Emperor Butterfly. This will get us FarmVille Freaks one step closer to completing our Butterfly Collection.
FarmVille Emperor Butterfly Giftable
If you are trying to complete your Feather Collection, you will be happy to know that the Green Plume collectible is now giftable.
FarmVille Freak Green Plume Giftable
It appeared in the Gift area yesterday and will be available for you to send to your FarmVille neighbors.
Some items have also moved to FarmVille.com exclusives. These trees are not currently available in the FarmVille Market. The only way to get one is to receive it as a gift from your FarmVille neighbor. To send them to your friends you will have to send through FarmVille.com as they are exclusives.
In a very late Tuesday Wednesday update, FarmVille introduced another building with purpose- a Horse Stable!
FarmVille Horse Stable Icon
The Horse Stable works like the Barn Raising in that you have to build it and work with your FarmVille neighbors for help. You will also need to be gifted or purchase materials required to build your Horse Stable. As an exciting perk for completing your Horse Stable, you will be gifted a free Grey Horse!
 FarmVille Brick Stables Giftable |  FarmVille Harness Stables Gfitable |
 FarmVille Brick |  FarmVille Harness |  FarmVille Horseshoe |
 FarmVille Nail |  FarmVille Wooden Board |
Please read Horse Stable Directs at bottom of post for more details.
FarmVille Horse Stable Announcement I
Everyone will receive one Horse Stable foundation in their Gift Box. You do not have to purchase it from the FarmVille Market. Although, the Horse Stable Foundation is available for 5,000 coins in the FarmVille Market in case you accidentally delete it.
FarmVille Horse Stable in Gift Box
Finally the Horses will have a place to live! Any of the horses can be stored in the Horse Stable that fits 20 Horses. You collect from your Horses in the stable every 24 hours.
FarmVille Freak Dr. Green Thumb's Horse Stable
FarmVille Freak Cyn's Completed Horse Stable
Some new Valentine’s Day Animals have hit the FarmVille Market.
FarmVille Valentine Day Icon
The Hot Pink Pig and the Pink Patch Cow can be yours with farm cash only.
They will be available in the FarmVille Market for 11 days.
FarmVille Valentine Day Themed Item Announcement
You will notice that the “Send” function is back, so they could make a perfect I-love-you gift for your sweetie.
The Pink Patch Cow is ready to harvest in 1 day and yields 80 coins, resells for 120 coins.
The Hot Pink Pig is ready to harvests in 2 days and yields Truffles for 30 coins.
 FarmVille Hot Pink Pig |  FarmVille Pink Patch Cow |
FarmVille released a new Teal and Mustard colored ribbon Mystery Box on 02.03.10.
FarmVille Teal & Gold Mystery Box
This Mystery Box can be purchased in the FarmVille Market for 16 FV$ or farm cash for the next six days.
As always, the Mystery Box promises to give you exclusive prizes that you cannot purchase elsewhere, but it’s always a gamble!
:::Spoiler Alert:::
The following are confirmed CURRENT (Teal & Mustard 02.03.10) Mystery Box Prizes:
 FarmVille Koi Pond |  FarmVille Waterfall |  FarmVille Water Mill |  FarmVille Porcupine |
 FarmVille Fire Circle |  FarmVille Kiln |
In honor of the Super Bowl, FarmVille introduced a new lonely, roaming animal.
The newest adoptable animal is the Referee Cow, you may recognize him 
The only way to get the Referee Cow is to adopt one from one of your FarmVille neighbors. Likewise, if one shows up on your farm you cannot keep it for yourself!
Disappointing, but the Referee Cow cannot be placed in the Dairy Farm.
The Referee Cow is ready to harvest in 1 day and yields 18 coins, resells for 120 coins.
Wow! What an exciting day for Horses in FarmVille. They’ve got new place to live and new family members
FarmVille Gray Horse
As a perk of completing the construction and building of your Horse Stable you will receive a free Grey Horse!
The Grey Horse will appear in your Gift Box after Horse Stable completion. Nice! If you need help or more details about building your Horse Stable, read here:
FarmVille Freak Horse Stable Help
The Grey Horse is ready to harvest in 3 days and yields 84 coins. It re-sells for 105 coins.
