Thats right! It's here,sonys new firmware update. Take a look at what it has to offer but remember if you update to this firmware you will lose the ability to play hombrew. So just wait untill the next M33 or HX version comes out.

3.80 changes:

• The function [Radio via Internet] has been added under [Network].
• The import of channels OPML format is now possible under [RSS Channel].
• Pictures can now be displayed under [RSS Channel].
• New visualization effects were added to the viewer under [Music].
• Support for PLAYSTATION®Network titles has been expanded

If you want to download it here is the link download

i also just found some more info on slim and lite updates on the japan site

link to it