From the 'T-shirt Forum' I think the 1430 is now out of stock in the US. They face the same 6 colour printer choice as us - the L1800 isn't available there and the xp15000 is not yet usable - so they have to upgrade to the p600 or downgrade to four colours.
Do you think that Epson may have a policy of introducing either eco tank or sponge filled cartridges on all new printers? Everyone I know who has a 1500w ( transfer printers and photographers) has a ciss or uses refillables. They can't have generated much aftersale revenue from the 1500w.