To be honest, it probably isn't completely necessary for you to ask in every thread.
Most add-ons that are marked as compatible with XF 1.4 are likely to be compatible with XF 1.5. If you find one that isn't, it shouldn't be the end of the world, but ideally you would test them on a test server first.
Most add-ons that are marked as compatible with XF 1.4 are likely to be compatible with XF 1.5. If you find one that isn't, it shouldn't be the end of the world, but ideally you would test them on a test server first.