Thanks for reaching out!
We are hoping to see more stock of the Eddyline Sitka XT and the Eddyline Sandpiper 130 sometime around the end of June. We want to remind folks that due to supply chain constraints and high sales demand, among other factors, inventory is limited at this time. Additionally, there are many variables that impact shipping and processing timelines, so these dates are estimations and can change rapidly due to factors that are beyond our control. As such, we are unable to offer a 'pre-order' option for an item or to provide specific dates the product will be available. Your best bet is to keep your eye on REI.com around that time to see when they are able to be purchased.
Hopefully this helps, thanks!