If you already have a 3DS, then yes. If not, then probably better to wait.
^This. If you have a 3DS it is a FANTASIC addition and it's really cheap. This will give you a good idea on if you think the HD version will be worth it, plus giving you something to play sooner rather than later while you wait for the HD version price to come down some.
I dunno, unless you're just dying to play it now (Honestly, the game is that amazing.), I'd say wait. May's only a few months away, and the console version's gonna have more content. Then again, thirty extra bucks is a little steep. What additional content will the port have, anyway?
-Upgraded RAID mode -New costumes -Completely redone HD visuals -New characters to play as (Hunk is confirmed; on the other hand, rumors say that other characters from Mercenaries 3D could be added, and I have heard a lot of people asking to play as Rachel). -New skills -New customization parts -New enemies (one of them is said to be like Nemesis, constantly pursuing the player which means that there will be no safe zones; In the official site check at the bottom of the character page of for an image of it: http://www.capcom.co.jp/bhrev_ue/character.html) -More challenging difficulty modes -Reduced/optimized loading -Enemy/item positioning is now random to mix things up a bit -RE.net integration and unlockables, etc. -Inclusion of a platinum trophy.
Regarding the graphics compared to the Nintendo 3DS version, the answer was:
"Revs is not just a ‘filter’ slapped on the previous version. Our team literally went in and re-textured (sometimes recreated in whole) the models used for this version so rest assured it will look fantastic"
So, definitely worth buying even if you already played the 3DS version.