Why not? Tablet devices are as much about delivering sound and vision as sending emails or tweets or surfing the interweb, and many use, or are thinking of using, them either as sources for, or means of controlling, audio and video systems.
As you may have noticed, we added 'Sound and Vision' to the title yonks back, reflecting the magazine's wider remit – although in fact we'd been reviewing products outwith the limited, and limiting, scope of 'hi-fi' almost since What Hi-Fi? was launched three and a half decades ago.
It's just a sign of the widening world of audio, video and home entertainment really: to many people, an iPad is as relevant an inclusion in the magazine as, say, a record player.
And it's only by continually re-examining our priorities that we've managed to keep WHFSV ahead of the rest of the magazine market in this sector for so many years.