I'm kinda having that happen (not the kissing).. Bought my G4 PB in November but the battery was playing up. Rang up apple on the 8th and they decided to order me a replacement PB rather than just replace the battery.
Anyway the next day they released the battery firmware

I was a little peed off as TNT had already rang to collect my PB..
Then today happened (or did it) and the MacBookPro is announced. I rang apple as soon as the keynote was over to cancel my replacement and order a refund. They said this wasn't a problem... I was in high heaven.. but
10 minutes later they rang and told me it could'nt be cancelled as it had reached the preparing stage, before it ships... DOH!!! but then was told to just ring once it arrives and they'll re-issue me another RMA and give me a refund...
A lot of messing, but I would have been more peed off if I had ended up with this liney PB when a perfect screen, more future proof (re-sale value in a year ot two's time)...
Try complainig about the screen, loudly and they may offer you a replacement. Looks like they are fully aware of the the lines now, new PB has differnet resolution and brighter screen... Good luck....