Is it worth using PDP as my daily driver i have a L1020 using it for Nokia cam and music. I just don't want to update and mess any of those up.
If i do update would i get Nokia Cyan on release
In terms of the camera, it's pretty decent and worthwhile

the new interface gives it a fresh new look
As for the Music hub, you might not like it
here are some of the problems with the Music hub as of now:
1. The live tile when playing a song is gone

2. Swipe to next track is also gone
3. The 'heart' shape thing to 'Favorite' a song is also gone
4. You can't see the upcoming songs that are to be played after the current track
But hey, here are some good features about it
1. You can automatically shuffle your songs and play them immediately by pressing the 'shuffle' button on the lower right
2. And that's about it haha
Luckily, Joe Belfiore did mention that some new updates will be done next week, specifically April 22

here's the link for that
Xbox Music to Receive First Updates Next Week
I'm just hoping that they update the Games hub also... that place is a mess right now :|

it's really up to you if you want to upgrade, the new parallax Start Screen is a new and unique experience
oh and by the way, they had separated the Music Hub and Videos Hub on WP8.1