v1.1.0 code for DATE field:
<tr>
<td class="title_cell"> test date </td>
<td class="field_cell">
<input id="eb_testdate" type="text" value="" name="eb_testdate">
<img id="eb_testdate_img" class="calendar" alt="calendar" src="/templates/system/images/calendar.png">
</td>
</tr>

v2.0.3 code for DATE field: 
<div id="field_testdate__" class="control-group">
<div class="control-label">
<div class="controls">
<div class="input-append">
<input id="testdate__" type="text" ..="" value="" name="testdate__" title="">
<button id="testdate___img" class="btn" type="button">
<span class="icon-calendar"></span>
</button>
</div>
</div>
</div>

Also, can you see that strange piece of code ..="" in the date field input line in the v2.0.3 code? I can't see this in any other fields, maybe this is a typo causing the error? I was thinking it was my template's css, but now I can see the different class I'm thinking it's just a little bug?