I've noticed dates on the Charles Ro website typically allow for when THEY will receive the product shipped from Lionel. So when Lionel says June 2013, Ro's site will typically indicate the 10th day of the following month.
Now having said that, I wouldn't hold out much faith for ANYTHING that's on the Lionel website shipping schedule. Hopefully, someone at Lionel will grab "ownership" of this document, and give it the attention it deserves for a customer-facing document. In its current state, it's been absolutely useless for much of 2013.
David
P.S. Most recently, I've also noticed that the Charles Ro website indicates "N/S -- ordered on request" for many of the new items... a potentially good indication that they're tired of needing to continually update their website ETA data due to the numerous product delays from overseas.