Path of Exile developer Grinding Gear recently announced a sequel to Path of Exile 2, but this doesn't seem to slow down the original at all.
GGG announced its plan for the Path of Exile in 2020, a busy time. The plan will maintain the regular quarterly plan for full-year expansion and release four expansion versions throughout the year, with four expansions from 3.10.0 to 3.13.0. It also stated that 3.10.0 will "may be announced in late February". There is still more than one month from the expected time, and players can have enough time to prepare the POE Currency so that they can easily win in the game.
They point out: "Because we work around various holidays/activities and ensure that larger events have enough time to fully test, the time of expansion may be one to two weeks compared to last year."
The group is also working on 4.0.0, and the group hopes to be able to show "fairly new content" around mid-year, possibly E3. The public beta may run in the second half of 2020. Based on feedback received at ExileCon 2019, the console team is also expanding so that console updates can be pushed faster and work on the Path of Exile mobile continues.
Path of Exile 2 will include the battle for the original game at launch, which may be why developers continue to expand it. The sequel may appear on PS5 and Xbox Series X as well as on PC. For more information, check out our interview with Grinding Gear founder Chris Wilson. Regarding any POE Items, I think players can buy them at MMOAH.