This year's story (Part 1 released in June, Part 2 will probably come in October or November) can be accessed by just travelling to Solstice (in the Southeast of the Tamriel map, beneath Murkmire) or through the collections/stories menu of the UI. You can choose "Start quest" or something like that there and it will appear in your quest log and you'll get a marker leading you to the quest npc that starts the story.
If you haven't done that yet, I'd suggest to play the prologue first. You can find it in the crown store in the "quest starters" category for free (the name is "A guild in crisis"). Or you can talk to Prince Azah directly. I don't know if he's available at three different locations for everyone or whether it depends on your character's war alliance, but for my Ebonheart Pact character, he's in Davon's Watch in Stonefalls, just when you enter the city gate.
I'd also like to mention that the new story is a sequel to the base game main quest and the base game Fighters Guild questline (Maybe also the Mages Guild questline, but not sure about that right now; in any way some events happening during the Fighters Guild questline are logically clearly supposed to happen before the new content - if you haven't played that yet but already play the new content, it will be a little weird).
ok,but why the bleep is it in the patch notes and why not the info that it is offline till fall ?