Now that HTC, Oppo, and Sony (leaked) have had their fun making their LCD-based 1080p displays, it seems inevitable that Samsung would bring its Super AMOLED technology to the table. According to SamMobile, that's exactly what Samsung plans to do by the end of the year.
speculation (link is to a Google translation of ZDNet's Korean site - you've been warned ) that Samsung might resort to using an LCD display in the next Galaxy S if it's unable to push out Super AMOLED technology at this resolution soon enough. Indeed, Korean competitor LG introduced a 1080p LCD display six months ago, but its latest flagship Optimus G and its Nexus 4 still only feature 720p displays. On the other hand, HTC and Oppo had no problem releasing phones this year with 1080p LCD technology, so Samsung might actually be able to build them fast enough to include them in the next Galaxy S.
Samsung may choose to release its fourth-generation Galaxy S later in the year, like it did this year (many had been expecting Samsung to announce the Galaxy S III at February's Mobile World Congress, but it wasn't announced until May). This might give the company enough breathing room to avoid massive shipping delays and more disgruntled customers than it had in June.