my group...
After the initial announements, and every session (1 or 2x per month - 8 to 14 hours each), we have a quick discussion on rules. Basically, I learned of it first since I check wizards.com and enworld, and since I'm the DM, I brought it up that I am interesting in switching to 4E.
My reasoning was that, it sounded like, due to powers, for players overall, there is alot of good in the new edition.
However, we've already got rid of alignment and use a more 'real life' model. We have lots of house rules for races/classes, etc, and cosmology/the D&D universe, and even spells, critical hits, and gods.
That said, i told the players that I like about 50 to 60% of what I see from 4E; some changes don't affect us since our house rules nullify them, and the rest I don't like so I want to house rule it all to what we use now OR I will do a complete re-write on it. (Wizards will be getting some heavy re-writes most likely, and several classes/races will have to be 'converted' from 3.5E, 3E, and 2E).
My friends' reactions:
Player 1 (male): looking forward to it; knows I house rule anything I see fit, to ensure players are happy, so he is all good. (his char will prob need some)
Player 2 (female, sister of Player 1): looking forward to it as well. Her char will need MAJOR house rules/re-writes (Lillendi Bard, advancing levels in a customized 2E multiclass fashion to represent her as a 'person' growing, at the same time as her class (her job/education) getting better.
Player 3: didn't want to change, but will since I am the DM and he loves playing D&D anyways....even tried to skip out on going to a wedding with his fiancee (another person's wedding) since I set D&D that day a few weeks earlier...he ended up coming for half the session and rushed off to get ready

hehe He controls 2 characters in the party (cleric and wild mage....both I will have some house rules for, more for the mage)
Player 4: he complains of everything. this is too weak, this is too powerful, but without any logical reasons why. No one really cares what he thinks...hehe
Player 5: he just wants to kill stuff; but my heavy story/rp/exploration style of campaigns slow stuffdown for him. thankfully, when there is a battle, I make sure they are all truly epic in scope, size, etc....so he's thankful of that and happy. He will need some house rulings for his character (half-orc barbarian)
Player 6: he is looking VERY forward to 4E.
Player 7: he has moved away to Austria. Player 1 controls his character and does a great job RP'ing so that he doesn't just use this character in the same way of his own. Emails to player 7 for his general thoughts and direction he wants to take for major decisions for his character, lead that, hedoesn't care for or against 4E. either way..he'll be fine. (he;s a super hardcore RP style player...so rules mean nothing to him)
I think overall, the group is looking forward to it just cause the player aspect sounds better.
Sanjay