i’m not that bothered about bands releasing a lot of singles before an album now - these days there’s not really much point putting a single out after the album so you might as well unload them all before.
ideally though i think one single released alongside the album announcement and then another taster closer to release date is probably ideal.
i do find it a bit lazy how few bands bother with separate artwork for singles now though. might sound unreasonable asking them to spend more money on extra artwork but i’d be happy with even slight variations, even just something knocked up in MS Paint rather than scrolling to ‘Singles’ on Spotify and finding 3 or 4 individual tracks all with the album cover.
still miss B-sides a bit too.