I believe the launch date for the Soyuz is still April 19 at 1000 UT. As with all launches things can change at the last minute.
Info on the satellites and predicted TLE for BEESAT-2:
---- Trevor M5AKA AMSAT-UK http://www.amsat-uk.org/ Join or Renew your AMSAT-UK membership at http://shop.amsat.org.uk/shop/category_7/Membership-of-AMSAT-UK.html ----
Are there some preliminary TLE data available? The only one I could find are from Mike DK3WN These could be used for all of them when they are all separated at the same time but when I understand right the Sats will be deployed during different Orbits.
The BEESAT-2 TLE is the only one I've seen.
SOMP and BEESAT-3 are in the same Pod as BEESAT-2 but I don't know when the other satellites will be deployed.
I've seen a reference to Dove-2 going into a 290 by 575 km orbit, if correct it might imply it separated after the 4th orbit. Be interested to see which frequencies it uses, at one time I believe it was planning to use 145.825 and 2420.0 MHz.
While the Tsenki announcement said deployments would occur between the 4th and 35th orbits I suspect that may mean deployment are either on the 4th orbit in 290x575 km or else on the 34th orbit into 575 km circular with no deployments in-between.
73 Trevor M5AKA