When you send back the 1st batch board to Clark for the damage simulation issue, they will also be updated for the long range IR.
As stated in clark site:
"<span style="font-family: Tahoma; font-size: small; ">Business impact: in order to avoid misunderstanding, we now offering,</span><p class="MsoNormal" align="left" style="margin: 0cm 0cm 0.0001pt; font-size: medium; font-family: 'Times New Roman'; "><span class="smalltxt1" style="font-family: Arial; "><span lang="en-us"><font face="Tahoma" size="2">-Existing TK20 are all welcome to return to get refund or toget free upgrade,</font></span></span></p><p class="MsoNormal" align="left" style="margin: 0cm 0cm 0.0001pt; font-size: medium; font-family: 'Times New Roman'; "><span class="smalltxt1" style="font-family: Arial; "><span lang="en-us"><font face="Tahoma" size="2">-Order placed for 2nd batch TK20 is now upgraded to TK20E automatically,</font></span></span></p><p class="MsoNormal" align="left" style="margin: 0cm 0cm 0.0001pt; font-size: medium; font-family: 'Times New Roman'; "><span class="smalltxt1" style="font-family: Arial; "><span lang="en-us"><font face="Tahoma" size="2">-Order placed for 3rd batch TK20 can be cancelled or pay for difference and change to TK20E</font></span></span>."</p>