Oct-04-2017, 05:45 PM
3.6.3 came out just yesterday, and is totally fine.
3.0 introduced some breaking changes in the name of progress, so if they suggested something 2.x when 3.0 was still brand new, that was likely because a lot of 3rd party libs hadn't transitioned yet. These days, though, everything new is written for 3.x, and almost everything important works with both. You'd need a very good reason to go back to 2.x, as it's currently in bug-fix only mode, and that will cease in 2020 (at which point all development will only be for 3.x).
3.0 introduced some breaking changes in the name of progress, so if they suggested something 2.x when 3.0 was still brand new, that was likely because a lot of 3rd party libs hadn't transitioned yet. These days, though, everything new is written for 3.x, and almost everything important works with both. You'd need a very good reason to go back to 2.x, as it's currently in bug-fix only mode, and that will cease in 2020 (at which point all development will only be for 3.x).