I would assume so - the PT-100 preamp cannot yet be ordered online (though they are supposed to begin shipping by the end of the month), but the amp has been available since early last month. That leads me to believe that Emotive doesn't allow products to be ordered until they are ready to ship. The A-300 can also be ordered via Amazon. Whether they are moving or not is maybe another question. But I doubt that I'm alone in wanting to see some independent reviews before pulling the trigger.
Consider a PM to the guy in the post you referenced to see what he thinks.
XMC-2; Panasonic UB420/Oppo 105/Roku Ultra to LG 86UM85; UltraRendu to LH Labs Geek Pulse X-Infinity; nCore nc400's or Prima Luna Premium Prologue to Maggie 1.7's; Rythmik F25; XPA-5 to CC-470v3 Center/ERD-1's; Thorens TD166 MkII/Denon DL207/XPS-1; 5-zone Sonos w/Def Tech AW5500's @ deck/pool/master bath & Sony SS-MB105/Polk R10 @ great room & kitchen. Two headphone setups: Hifiberry/BasX A100 and Allo BOSS/Schiit Asgard 2 (each to Senn 600's). PC w/Airmotiv 3b's. Roon user.