It's a great news, Mathieulh decrypted lv0, he can get keys 3.60-3.73 and all new keys included into future ps3 fws, for him the game is over. Let me hope other people can get them and give new cfws to all guys with a ps3.
If a new CFW gets released, would there be a good chance in the increase in PS3 sales?
It could, but you also have to take in consideration that many people with hacked PS3s will also have a PS3 with OFW installed to play online and play the newest games.
If a new CFW comes out it could stop people from buying second PS3s. I don't think it will have a dramatic effect on sales anyways because most people who wanted a fully open (hacked) console bought a 360 to start of with. But that's just my opinion.