The singer confirmed that he was currently working with ex-Oasis musicians Andy Bell and Gem Archer, touring members Chris Sharrock and Jay Darlington and a "mega" new bass player.
Liam told Sky News of Noel: "He's doing his thing, we're doing our thing, I wish him all the best.
"Don't release it the same day as ours, because we'll have you, and I'm feeling really confident about that. I don't wish him any bad, I'm his brother. I love him to death.
"I've not spoken to him. I didn't really speak to him that much anyway. All this thing about us fighting all the time - he was doing his thing, I was doing my thing, we only met on stage."
When asked if Noel would rejoin the band after a solo album, he added: "I don't think that's good for the soul all that stuff.
"You can't hold people to ransom like that. I'm doing Pretty Green now and making my own tunes and all that - and whether they're better than Oasis or not we'll see.
"It's not fair to the fans either, you can't just mess with people. Oasis mean a lot to people, you can't keep turning it off and on. I think it's done."