Hilbrich, S. Bahnsen, F.H. Bolsinger, M. Jebramcik, M.A. Khan, S. Mai, C. Meyer auf der Heide, A. Molo, R. Rast, H. Shayeganrad, G. Ungelenk, P. TUP012 radiation laser electron storage-ring synchrotron 2015 2015-12 The 1.5-GeV synchrotron light source DELTA, operated by the TU Dortmund University, comprises a short-pulse facility based on the coherent harmonic generation (CHG) technique, which allows for the generation of radiation pulses with wavelengths down to 50 nm and a duration of 50 fs. In order to reach even shorter wavelengths, the present setup will be modified to employ the echo-enabled harmonic generation (EEHG) and femtoslicing techniques. In this paper, recent developments including an improved lattice design and a concept for the new vacuum chambers will be presented.