I apologize if this has been discussed but I have not been able to locate anything of this nature. I have been told by numerous persons that IS3 is still available to lateral into. I have also seen in this forum that IS3 is an "open rate". I do not know if the lateral and open rate are one in the same but I have not been able to locate any message traffic concerning either. I graduated A-School a little too late to take advantage of the lateral into IS and would very much like to take advantage of the lateral now if it is still available.
The direct lateral option is over you would probably have to go back to school for IS. Or you could try to lateral the old fashioned way per the persman, but you would probably become an IS faster going back to school. You can find all this info in the PERSMAN via CG Central.