new updates in transports or are they obsolete ?

Your average music lover listens to CDs either as ripped computer files (probably data compressed) or using a multi disc DVD/CD player. Because of this manufacturers have really scaled back on the production of single disc CD player mechanisms. Very few audiophile oriented companies have the resources to design and build a CD transport from scratch and that's why you see so few dedicated transports. It's also impacting single disc CD players.

There was never a large amount of companies manufacturing reference level transports to begin with, however you still have major players in digital gear producing terrific transports, such as: 1)CEC 2)Ensemble 3)Accustic Arts 4)Zanden 5)Meitner 6)Teac 7)Wadia 8)Dcs. If you still want the finest possible sonics out of a digital source, a reference level transport makes a significant difference compared with hard drives.

Apparently Rega has developed a new transport for their forthcoming Apollo CD player

Don't forget Audiomeca.