Do you know why? Will they be reinstated sometime in 2020 as they've done for several years now. Your message sounds like a step BACKWARD in that they're not going to have release notes period. These are important, as they tell us what forms are now available for filing, and so on. Something doesn't sound kosher here.
As far as known this is a permanent change in procedure.
You can still find IRS forms availability using this link (should be available sometime in December) - https://ttlc.intuit.com/community/forms/help/irs-forms-availability-table-for-turbotax-individual-pe...