So anyways, long story short, here is what's new there:
- They lowered the fees for PP and bank-backed transactions
- Now can do parallel payments - to multiple recipients at once
- Can do chained payments - when a transfer goes from one recipient to another, and everyone takes a commission - geared for affiliate programs
- Preapprovals - a user can authorize a vendor to keep charging up to a certain amount ($2k max) without repeat logins at the PP site every time - good for games, Skype, other micropayments
The API is available in Java and PHP, and really just some code to create SOAP requests. Although how much of that is really new, I don't know -- e.g., Skype micropayment stuff has been around for some time now...