Well, I think it would be pretty difficult to make a guess with any degree of certainty. Would not be surprised to see the 1B back in the lineup. If you analyze the 2013 lineup, you will note that 3 of the caliber/configurations; the 7x57 RSI,the .375 H&H 1H and the .45/70 1S are generally considered to be/have been the most popular chambering in these configurations since they have been made. The .375 H&H dates from the beginning(1967), but few were made until 1970. The 1S in .45/70 dates to 1970. The 7x57 RSI was an original offering in about 1982.
The 6.5-284 has never been commercially sold by Ruger in any model, although an offering of a M77 MkII in 6.5-284 was sold on the Ruger Auction a few years ago.
The .222 Rem. was fairly common in the non prefix era of 1967-1969 and is one of the most sought after/desirable calibers to be found. A lot of folks are going to get their itch scratched with this little 1A in .222. Look at the prices commanded by the scarce/rare/desirable 1A's in the .22 Hornet and .223.
So for 2014. I think it likely there will be some new, never before done offerings and some in old and very popular caliber/configurations. What?? I would not even try to guess.
Just be patient and see!.
ENU
At the NRA show they had a .222 and a .45-70, the only two #1's there.
Next year? tough to say what they could do, that they haven't already done...
#1S in a .500 S&W?
#1B in a .257 Weatherby?
#1A in .348 win?
#1V in the .22 CHeetah (yeah I know, not likely
)
#1H in .50-90?