umm, i can’t give the best answer on this, as i haven’t heard the whole album, only clint eastwood.
for a start, although damon albarn is a big part of blur, they are a band, so while he might bring some of the gorillaz influences to the next album, each of the other members will also bring their ideas.
also, i’m led to believe that a big part of the gorillaz sound is dan the automator, who is not a part of blur - gorillaz isn’t a side project like a perfect circle was for maynard james keenan, it is closer to a supergroup than one person’s side project.
for this reason, i don’t think any new blur album will sound too much like gorillaz, but having said that, i wouldn’t be surprised if damon did bring some of those influences in to the blur sound.
i’m expecting their next recording to continue in the vein of ‘blur’ and ‘13’ - weird, very indie and very lo-fi. i doubt we’ll get a return to the brit-pop sound of old, i think i’ve heard that they aren’t particular fond of their older work, though don’t quote me on this.
so, i think that while it mightn’t be as sombre or as melancholic as 13 (much of the mood of the album was the result of a long term relationship between damon and… someone ending), it will still have the oddities and eccentricities that that album had - although still with pop melodies, even 13 had coffee and tv. music is my radar is probably a good indication of where they’re going.
actually, music is my radar was quite a fun sort of song, so yeah, they’ll proabably have a bit of fun again.