There's no need for multitasking. They've stated numerous times that, at least in the near future, they're perfectly fine with tombstoning working just how it works now. Background Push notifications is not multitasking. No one that works for Microsoft has even hinted at multitasking coming.. in fact now that I think about it, I'm not even sure if they've even confirmed that it's something they're working on.
All I'm trying to do is prepare you for March because I don't want this forum to become overrun with people saying that they were told they've have multitasking and tbt navi and x and y and z when there's no information anywhere saying that we should expect anything other than copy and paste anytime soon.
If you're so hard up for all of these features that most of us can live without, in my opinion, you should probably look into switching to a different phone until WP7 catches up.. and looking at Microsoft's history, it could take a while. They've already let us down on release dates and firmware updates, why would this be any different?
As for me, I just hope they fix the bugs. For the love of God, fix the bugs. I'll be the happiest WP7 owner on this website if they just fix the bugs.
edit: and give me SMS backup/restore, but I'm not holding my breathe. Baby steps, Microsoft. Baby steps.