The last page the article has a good summary of the various flavors of eschatology that are floating around concerning the end times.
There's one related side note you never hear discussed much in evangelical circles - the guys who were closest to the source of the prophecy in Revelation, namely the Apostles themselves, who hung out with Jesus every day for 3 years, and who were uniquely filled with the Holy Spirit so they could know of and write about the end times events in the first place, were All without exception expecting his =imminent= return. Almost every gospel, epistle and letter in the new testament has some admonition along the lines of "get ready, it's almost here, here it comes, be ready, any day now...". The 1st century church =clearly= was taught by the apostles to believe that the return of Jesus would happen within a few years or a few decades at most.
And yet, despite their close association with Messiah and their special spiritually-enlightened status as Apostles, they were wrong.
Basically what we call "eschatology" today is a fancy way of making excuses for why the inspired writers of the new testament were wrong. The apostles certainly didn't have or need any such "eschatology" in their day because they taught and KNEW beyond a shadow of a doubt that Jesus was coming back almost immediately.
It wasn't until centuries later that these various explanations like 'dispensational premillenielism' hooey start cropping up.
Yet another paradox of faith.
(how come all the hard questions end up in a paradoxical stalemate)