i love irivers stuff, but i this is probably underpowered judging by now mention of its tech specifics and being marketed as 'e-dictionary' and beign made by iriver... besides, cowon has been making better stuff recently anyway.
The Japanese and Koreans use the term "E-Dictionary" as we would "Palmtop". They're not underpowered in the least and are usually built with the fastest mobile processors available. These devices started out as simple dictionaries, but feature creep and inter-corporational oneupsmanship have added full audio / video PMP capabilities, web browsing and email over wifi and/or cellular data, a full office suite, PDA software, DMB-TV and basic games to pretty much every device in the category.
This is not a new type of product. E-dictionaries have been slowly evolving since the early 90s. As I watched them get cooler and more feature-packed, I could never understand why none of these devices made it to the western world. Here's some other new E-dictionaries from the last year or so:
Atree UD10 - www.akihabaranews.com/en/news-13691-DMB-Dictionary+by+Atree.html
Atree UM10 - www.engadget.com/2007/08/14/atrees-um10-e-dictionary-with-trick-sliding-keyboard/
i-Station D3 - www.pmptoday.com/2009/01/26/i-station-d3-released/
Inkel MU-D - www.akihabaranews.com/en/news-15597-MU-D%3A++The+New+Multimedia+Dictionary+from+Inkel.html
iRiver D5 - www.akihabaranews.com/en/news-16173-iRiver+D5+Now+Available+in+Japan!!.html
iRiver D27 - www.funponsel.com/blog/gadgets-toys/iriver-d27-e-dictionary.html
iRiver D30 - www.engadget.com/2008/01/07/irivers-new-d30-e-dictionary-and-m20-gps-navigator/
Istation Udic - www.akihabaranews.com/en/news-15930-Udic%3A++The+New+E-dictionary+from+Istation.html
Nurian TX-3 - www.engadget.com/2009/02/17/hannuri-biz-offers-up-nurian-tx-3-pmp-e-dictionary-combo/
Nurian X40Kris - www.pmptoday.com/2009/03/12/nurian-x40kris-pocket-edictionary-is-thin/
Sharp Brain - www.akihabaranews.com/en/news-17735-New+eBook+Reader+and+Dlectronic+Dictionary+from+Sharp.html
Sharp PW-TC930 - www.engadget.com/2007/11/15/sharps-new-pw-tc930-e-dictionary-now-with-insect-noises/
Sharp RD-CM1 - www.akihabaranews.com/en/news-17388-Sharp+RD-CM1%2C+Another+All+In+One+Digital+Dictionary.html
Sharp RD-CX310 - www.engadget.com/2008/04/29/sharp-intros-rd-cx310-electronic-dictionary-pmp/
SII A10m - www.akihabaranews.com/en/news-17521-Ultra+Compact+and+Ultra+Limited+Pocket+Size+Electronic+Dictionary+From+SII.html
Udea Expert 300W - www.engadget.com/2008/08/26/udea-expert-300w-electronic-dictionary-boasts-fm-radio-and-mo/
And that's just what I found from about 2 min. of searching. Any one of these would have been a big deal here, but none of them ever made it out of Asia. I doubt the D50 has much of a shot either.
