Check out some of the new features and changes in PS Vita’s 3.10 system update below:

• You can now display up to 500 applications on the home screen.
• A Calendar application has been added for PS Vita, allowing you to set up gaming events with your friends. Sync your Google calendar to have all your events with you on your PS Vita. You can also share your favorite events by using the Messages and Email applications.
• A new “Manage Content on Memory Card” option has been added to the Content Manager application. You can now view the data on your memory card, making it easier than ever to manage content on your PS Vita. You can now view memory usage by content type, and delete content and applications.
• You can now send and receive voice messages using the Messages application on PS Vita. Exchange voice messages with your friends and players on PS4 and PS Vita.

here: http://blog.us.playstation.com/2014/03/24/ps-vita-system-software-update-3-10/comment-page-2/#comments 

Is it too much to ask for me to keep my Vita home screen the same when I remove the memory card? I have one card full of games and another card full of videos. Even after the update that was supposed to remember our homescreen placement (I keep mine very organized), it still goes to shit when I swap cards. Do I have too much content?

500 applications? Do that many applications even exist? You can't fit 500 games on a memory card either. What's the point? 

Hey, its better than one of PS3's famous "general improvement/bug fix/stability" patches. I'm not sure if I'll ever have 500 applications on my Vita, but the option to display them is certainly nice xD

No argument here.  I had to be semi creative to fit all of the PSP, Vita, AR,and Minis on my Vita in any kind of configuration that resembled "order".

1) there aren't 500 applications total even if you bought all content in any particular region, lol

2) who says "dude we totally need to play vita together 5pm tuesday" then is using their vita enough to see a notification?

3) About bloody time!

4) More griefing oppertunities are always good.