Heyoo this is your 1 day/25ish hour warning of a launch. SpaceX is launching bulgaria Sat 1 tomorrow at 4:10 Eastern, 1:10 pacific, 18:10 UTC.
Yes this will feature a landing attempt on the drone ship OSCILY(Of Course I Still Love You).
Yes this is the second launch of a reused stage that has already flown and launched a satellite before. Very exciting stuff! This core was first launched at the beginning of this year launching satellites for Iridium from Vandenburg AFB. It performed a flawless landing off the coast of California and was towed into Long Beach harbour where they brought it in under the cover of darkness. Next time(next month) if the stage is being towed in during the day I will run out there in a skiff to get you guys some pictures.
You can find the stream on SpaceX's page on youtube and their countdown is to the actual launch at T-0, and should start around 20 minutes prior to that time.