This is how it's looking so far: There are going to be several 4 issue arcs and a few standalone issues, as well.
First Arc- The Long Way Home, written by Joss. Issue One: feature Buffy, Dawn and Xander. Giles and Andrew appear as minor characters. The Slayer organisation is a big'un, and the military fear it, and send a Sunnydale survivor, the now slightly crazy Amy Madison to kill Buffy. Willow comes to the rescue from Amy at the end of the second issue. Willow vs Amy, skinless Warren captures Willow, Buffy and new Slayer Satsu rescue Willow, Ethan Rayne is killed military general Voll. Also, Dawn's a giant.
Issue Five: Standalone issue, "The Chain", about a Buffy decoy who gives her life to stop a demon uprising.
Second Arc, "No Future for You" by Brian K Vaugan is about Faith and Giles in England on a mission to assassinate a rogue Slayer called Lady Genevieve "Gigi" Savidge. Buffy appears briefly, falls out with Giles. Giles and Faith tour the world trying to find and rehabilitate rogue Slayers.
Two one shots: "Anywhere but Here" and "A Beautiful Sunset". In the first, Buffy and Willow see prophesies and visions of the past; Buffy robs banks, Willow naked, intimate with a snake-creature, and Buffy will face an unexpected betrayal (Willow promises it won't be her). In the second, Buffy confronts Satsu about Satsu's crush on Buffy, before they are attacked by Twilight (the Big Bad, who Amy, Warren, Voll and Gigi all work for). Buffy later relates to Xander about her feelings of disconnection.
Third Arc, "Wolves at the Gate" by Drew Goddard. Shocker: Buffy winds up in bed with Satsu, but explains it will go no further. Hilariously ever member of the cast (including Renee, Xander's love interest, and Andrew) walks in. Japanese goth vampires steal the scythe. Because they have Dracula's powers, Xander seeks Dracula's help, and they chase the vampires to Tokyo where they plan.to de-power all the Slayers. Giant Dawn fights her robot counterpart, egged on by Andrew. Renee is killed. The vampires are de-powered and slain. Buffy sleeps with Satsu again, after appointing her head of the Tokyo squad. Willow communes with snaky goddess Saga Vasuki.
Fourth Arc, "Time of Your Life" by Joss is a crossover with the comic book series "Fray" which Joss set in the future of the Buffyverse. Buffy and Willow head to New York where they meet Vi and Kennedy, and Buffy has a secret rendezvous with Riley. Buffy is then sucked into the future where she meets Melaka Fray, the only Slayer in the 23rd century. Dark Willow of the future is working with Melaka's brother Harth, but her plans don't make sense to anyone. Perhaps as she wanted, Buffy is forced to kill Dark Willow. Present-day Willow is instructed by Saga Vasuki on how to rescue Buffy, but does so blindfoldedly as requested so as not to see her future self. Lasting questions: What was Dark Willow attempting? will Kennedy find out about Willow's seemingly sexual relationship with Saga Vasuki? is Wllow on a dark path? Riley is revealed as an agent of Twilight.
One shot; "Time of Your Life" by Jeff Loeb. Buffy awakens in her season one body, with complications. Revisits the setting and style of Buffy the Animated Series, which never made it to screens.
Five interconnected one-shots about vampires going public. "Harmonic Divergence" (Jane Espenson) about Harmony (and Clem?) becoming reality TV stars, then "Swell" about Slayers Satsu and Kennedy (romance? affair?), then "Predators and Prey" where Buffy and Andrew track down a rogue Slayer from previous issues called Simone, and then two more concerning Faith and Giles, and Xander and Dawn, respectively.
Then, Jane Espenson's 5-issue "Oz" arc.
NYT-best-selling author Brad Meltzer's penultimate 5-issue arc.
Joss's final arc, 5-issues.