There is no current ETA I can provide. I will send you a PM on who you can contact within Pulse Secure to discuss how to move forward on this request.
we also have a lot of customer request for 64 bit support / Junos Pulse or at least Network Connect.
Please send me contact of Pulse Secure team.
(Smart Com d.o.o. - Slovenia)
Please open a support ticket so this request is properly tracked. Please provide the case # once you have it.
Pulse Client 5.3 R3 onwards has 64 bit support