About 15 months old Courses in Learning Hub - Discovery Edition

Learning hub seems to be too good to be true to learn from SAP itself but before I pay for customer edition, I enrolled in to discovery edition. When I check out courses, most of them are recorded about 15 months ago ..  For example

E-Learning DISC_HA100E_en_98

Revision:  1 - 12/1/2013 12:00 PM Europe/London

I verified from customer rep, date is in DD/MM/YYYY format ..

My only concern before I pay for customer edition is , courses are recorded almost 15 months to 2 years old ..

My whole point is, technology is changing pretty fast and learning old SAP versions is waste of time & funds ..

I talked to training education support, and they do see courses are recorded long time ago.

I need clear answer from SAP education & training,  is courses are updated as soon as classroom classes are teaching latest version.

Or How much time it takes for a course to be released when a classroom classes are already teaching (for ex: SAP HANA SP7)

I really appreciate responses..

Thanks