"ipod" is now a universally known cultural icon. Don't make people learn new terminology.
Also, it's ironic that you think they should drop the "i" because they are "tilting towards wireless communication" and internet access. Know why? Because the "i" comes from "imac," and
that "i" originally stood for "internet." As in, this mac will get you up and running on the internet in no time (yes, that was really a major selling point of the original imac). So really, a wifi ipod would be the
first ipod to really deserve the prefix "i"!
Who's talking about making people "learn new terminology"?
I'm not talking about taking away the "i"... I'm talking about adding a "w"!
wiPod... sounds like iPod. How hard is that? It adds to the brand, it emphasizes wireless which is becoming a very critical part of the business right now, and it's an "evolution" of the name that can be eased into the public consciousness with something as simple as a title card where the phrase "Say hello to iPod" appears and then a "w" drops in. When a brand name gets stale, people stop noticing. People noticing the change will perk interest, and they'll first want to know what exactly changed... That's a perfect opportunity for Apple sales and marketing to step in and answer that question by demonstrating the features of the product... be it in a commercial as elegant, simple and to the point as the first iPod commercial, or in store demonstrations as they get walk-ins. The name change, if handled properly by Apple, then becomes a conversation piece... rather than there being nothing particularly new to talk about.\
Sony did the same thing with "discman"... and that name also permeated the public consciousness although not as greatly as walkman (much less iPod). Now they've reverted and they brand every one of their music players a "walkman" but that hasn't helped them because they have not really understood their customers as well as Apple does, and they've been mired by numerous problems including their penchant for poorly marketed and consequently poorly understood proprietary formats as well as copy protection problems that have acted as great deterrent forces regardless of what they choose to call their digital music players.
Apple is a product leader and it's good for them to differentiate. It's not good to continue associating solely with the "i" prefix because of the oversaturated and negative connotations it carries where the concept has been so beaten to death with every third rate non-internet related product out there such that the "i" prefix has become somewhat of a cultural joke.
Because LAN-WAN interconnectivity is, following mobile internet access, the next big thing... and it'll be enabled by technologies like wifi, 4G/WiMAX, etc.... "wi" is the new "i".
From the perspective of strategic branding, Apple should get out ahead and use the "wi" name while others are still trying to dredge up the last few drops of artificial credibility they think they can gain from name association with Apple's "i" products.
EDIT: Another possibility is keeping the iPod name for the brand as a whole and using "wiPod" as a product name instead of iPod Something. A one-word name is a lot easier to remember relative to iPod Nano, iPod Shuffle, etc. iPod, wiPod, nPod, sPod... not picking out particular meanings here, just using some letters as an example of concatenating make and model.