Just in the nick of time, the TLS pipped the post and got in a pre-anniversary-of-the-fall-of-the-wall piece by Jane Yager asking What was the GDR? - with brief reviews of Tellkamp's long Der Turm, Marcel Beyer's dull as dishwater Kaltenburg, Ingo Schulze's charming Adam und Eva - and, er, Lukas Bärfuss' Hundert Tage (my review is here), which isn't about the former East Germany in any way whatsoever, but is well worth reading.
An interesting article, quirkily written if low on insights for anyone who follows German literature in general, but I presume that doesn't apply to all that many Times readers. The turtle Yager refers to in Adam und Eva, by the way, is a tortoise. Just so you don't imagine Adam sitting next to a sloshing aquarium on the passenger seat of his Wartburg all the way to Hungary and back.