The next SL lens (L-mount) to be announced by Leica will be the VARIO-ELMARIT-SL 24-70mm f/2.8 ASPH according to Nokishita. Leica currently has the Vario-Elmarit-SL 24-90mm f/2.8-4 ASPH lens in their lineup that is often criticized because of its variable aperture – the new 24-70mm f/2.8 will be a welcome addition. Unless I am mistaken, the 24–70mm f/2.8 SL lens was not listed in any previous SL roadmaps, which means that we will probably get an updated roadmap as well.
Update – I received some additional information on the rumored/upcoming VARIO-ELMARIT-SL 24–70mm f/2.8 ASPH lens: it will be offered together with the Leica SL2s camera as a set. The optics of the new lens will be based on the Sigma 24-70mm f/2.8 DG DN Art lens (this is hard for me to believe – Leica will take a Sigma lens and put a red dot on top of it?)