Last night, he dropped by HBO for a private publishers' advance screening where he introduced the first episode of the season, "The Swords," before heading out to Brooklyn, where 7,000 fans were gathered to watch the same episode at Barclays Center.
"Some have paid $5,000 to be there," he noted with some awe. "Think of how many books they could have bought."
Martin, who typically writes once per season, identified the second episode, "The Lion and the Rose," as his. "But you won't be seeing that tonight," he teased.
Season 4, which draws from the second half of A Storm of Swords, the third book in the A Song of Ice and Fire series, begins April 6 on HBO.
People, he said, often ask him, "Did you expect all of this," he told the crowd. "No, I didn't expect it," he answered with mock indignation. "But I like it."