Views takes $_GET. {Hack} //Creating Ctools plugin that is retrieve views result by GET-parameters.

changelog.inc

<?php
/**
 * Callback function to supply a list of content types.
 */
function spaint_site_changelog_ctools_content_types() {

  return array(
    'single' => TRUE,
    'title' => t('Changelog'),
    'description' => t('Changelog CTools CT'),
    'category' => t('spaint_site'),
    'all contexts' => TRUE,
    'defaults' => array('mode' => 'full'),
  );
}

/**
 * Output function for the content type
 */
function spaint_site_changelog_content_type_render($subtype, $conf, $panel_args, $contexts) {
  $block = new stdClass();
  $platforms = taxonomy_get_tree(SPAINT_SITE_PLATFORM_VOCABULARY);
  $versions = taxonomy_get_tree(SPAINT_SITE_PLATFORM_VOCABULARY);
  $view = views_get_view('changelog');
  foreach ($platforms as $platform) {
    if ($platform->name == $_GET['os']) {
      $os = $platform->tid;
    }
  }
  foreach ($versions as $version) {
    if ($version->name == $_GET['version']) {
      $v = $version->tid;
    }
  }
  $output = $view->preview('master', array($os, $v));
  $block->content = $output;

  return $block;
}