FLT RELEASED WITH FO'S WINDSHIELD ANTI-ICE MEL'ED FOR AN MD80 FLT. PIC RECEIVES AN ACARS MESSAGE FROM 2ND DISPATCHER UPDATING THE AREA ICING FORECAST AND THE CHANGE TO HIS ACFT'S STATUS IF WX RELATED DEVS ARE NOT CONSIDERED IN THE AREA S OF OMA; NE.

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MD80 FLT SLC-DFW WAS RELEASED WITH MEL 30-10A; WHICH IS NO ICING PLACARD BY PREVIOUS DISPATCHER. FLT WAS ENRTE WHEN TURNOVER OCCURRED. FLT WAS AT FL330. PREVIOUS DISPATCHER INDICATED THERE WAS A BAND OF PRECIPITATION ACROSS FLT PLANNED RTE; BUT TOP OF ICING WAS FL280 PER THE ICING POTENTIAL MAP DISPLAYED ON THE CRT. I DISPLAYED AREA RADAR AFTER TURNOVER AND IT INDICATED TOPS FL250-450; ACROSS AREA FROM TXO-OMA AND LIGHTNING DETECTION INDICATED ISOLATED STRIKES IN THE SAME AREA. AT APPROX XA30Z; I UPDATED THE ICING POTENTIAL MAP AND THE UPDATE SHOWED AN 80-100% PROBABILITY OF ICING IN THE BAND OF PRECIPITATION PREVIOUSLY MENTIONED; BUT WITHOUT ANY REF TO ONLY CERTAIN ALTS. MY ASSESSMENT OF THE WX SIT WAS THAT WITH TOPS FL450 AND RADAR ECHOES OF PRECIPITATION AND SOME CONVECTIVE ACTIVITY; ICING CONDITIONS EXISTED ON THE RTE OF FLT. I SENT AN ACARS MESSAGE ADVISING FLT OF ICING CONDITIONS ALONG RTE AND SUGGEST AN IMMEDIATE SOUTHERN DEV AROUND THE AREA OF PRECIPITATION/ICING. FLT NEVER ACKNOWLEDGED ACARS MESSAGE AND CONTINUED THROUGH THE PRECIPITATION WITH LITTLE DEV. SUPPLEMENTAL INFO FROM ACN 596520: THE AIRMETS DESIGNATED AN AREA FROM 14000 FT TO FL260 ON ONE SEGMENT OF THE RTE OF FLT; AT WHICH POINT THE FLT WAS PLANNED AT FL330-370. THE ONLY THING I MIGHT HAVE ADDED TO THE PLANNING STAGE OF THE FLT WOULD HAVE BEEN A CALL TO WNI; BUT THEN ONLY IF I HAD FELT THAT SAFETY WAS POTENTIALLY COMPROMISED. I DID NOT.