Jon Jones Teases 'Really Good News' ... In Drug Test Drama

Jon Jones clearly believes he will NOT serve a 2 year suspension for a positive PED test before UFC 200 -- saying he's got "really good news" and expects to be back in the Octagon pronto.

Jones just made a video to update his supporters -- "if there are any of you guys still out there" -- and says he has brand new information about the testing that seems to support his stance that he did NOT knowingly cheat.

Jones has been temporarily suspended by USADA (the U.S. Anti-Doping Agency) until his case goes before the Nevada Athletic Commission. He was expected to get the usual 2 year suspension.

Jones doesn't reveal why he's so optimistic -- but says, "We have found out lots of really good news and I am expecting to be back in the Octagon really soon."