Sharadha,
basically all 'accelerated' functionality is part of Suite on HANA. And without need for a separate RDS to set up the data model in HANA / repliacte the data on a secondary HANA database (as all is natively already in HANA after the database migration as part of a Suite on HANA transition).
The accelerators are a combination of innovation (a bunch of additional programs, mainly line item browsers) and improvement (optimization of reporting and transactions like allocations) by using HANA as a secondary database (HANA side-by-side).
Information on the HANA Finance accelersators (inlcuding updated overview presentations) can be found at
Regards
Carsten Hilker Solution Management Finance