I have BIAB 2018 PlusPak. I want to now upgrade to 2019 and want to ask what version should I get so I get all the realtracks and realdrums kits available?

Also if I buy 2019 now, would there be any discount for getting 2020 (assuming PG release 2020 this year) it is only about 3 months to a possible new version release so yeah trying to decide to just wait or buy 2019 now and 2020 when released.

Thanks