Interesting to read through.
It will support a Presence service
Series 60 Platform 2 nd Edition, Feature Pack 1 supports the Presence service as defined in the OMA IMPS v1.1 specifications. With the Presence service, the user is able to publish own Presence (availability) information to other users and also view the Presence information published by other users.
and MP3 and AAC
Multimedia Framework in Series 60 Platform 2nd Edition, Feature Pack 1 supports two new codecs: MP3 and AAC.
among other things.